Multiple Choice
Which of the following contains an incorrect match of the organelle function/description?
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1. Introduction to Biochemistry
Cell Organelles
Multiple Choice
Which cell organelles are directly involved in protein synthesis and processing for secretion in eukaryotic cells?
A
Ribosomes and rough endoplasmic reticulum
B
Mitochondria and peroxisomes
C
Golgi apparatus and centrosomes
D
Smooth endoplasmic reticulum and lysosomes
Verified step by step guidance1
Identify the organelles involved in protein synthesis: Ribosomes are the cellular structures where amino acids are assembled into proteins based on mRNA instructions.
Recognize that ribosomes can be free in the cytoplasm or bound to the rough endoplasmic reticulum (RER); the RER is studded with ribosomes and plays a key role in synthesizing proteins destined for secretion or membrane insertion.
Understand that after synthesis in the RER, proteins are transported to the Golgi apparatus for further processing, modification, and sorting, but the Golgi itself is not directly involved in the initial synthesis step.
Note that mitochondria and peroxisomes are involved in energy metabolism and detoxification, respectively, and are not directly related to protein synthesis or secretion.
Conclude that the organelles directly involved in protein synthesis and initial processing for secretion are the ribosomes and the rough endoplasmic reticulum.
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